Best friends both transmigrate into a historical romance novel, one is a vicious female supporting character, and one is a cannon fodder extra, unable to live past three chapters! An outrageous survival plan: I romance the Duke, you romance the heir, defying fate and changing destiny through seniority! Fake pregnancy as a shield, outwitting the mad heir, encountering assassination and bloody letter accusations. Holding modern knowledge, plotting against each other with the black-bellied Duke. The sisters are deeply trapped in a vortex of power struggles, their future life and death uncertain.